Answer
Ögedei Khan's military reputation was cemented by the Siege of Gurganj, a pivotal battle in the Mongol conquest of Central Asia. The siege, which lasted for seven months, showcased Ögedei's strategic brilliance and his ability to overcome formidable obstacles. The successful capture of Gurganj, a heavily fortified city, demonstrated Ögedei's military prowess and established him as a formidable conqueror.